Thousandfold boosting instantaneous current of triboelectric nanogenerator based on decoupled charge pump and discharge tube. (July 2022)

• Record Type: Journal Article
• Authors: Yang, Ze; Yang, Yiyong; Liu, Fan; Li, Bo; Li, Yinbo; Liu, Xu; Chen, Jiaqi; Wang, Chengbiao; Ji, Linhong; Wang, Zhong Lin; Cheng, Jia
• Is Part Of: Nano energy. Volume 98(2022)
• Publication Date: 2022-07
• Subjects: Decoupled charge pump -- Triboelectric nanogenerator -- Charge density -- Current boost -- Discharge tube; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2022.107264
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: The triboelectric nanogenerators (TENGs) are facing great challenges of high power and long life in practical applications, owing to low charge density, easy wear material, etc. Trying to address those limitations, a new operation method of decoupled charge pump for TENG along with the discharge tube is proposed to thousandfold improve its instantaneous peak current. The pump and main TENGs optimally adopt the freestanding mode and contact-separation mode, respectively, and their motions are decoupled. When the capacitance of the main TENG as a variable capacitor reaches the peak value, there is the maximum charge generation from pump TENG and charge injection into main TENG. With the integration of discharge tube, the output current has an above 1000 folds increasement and the power density is calculated to 21.25 W/m 2 . A charge density of 628.7 μC m −2 is achieved. This work provides a new mode of charge pump with intermittent operation for enormously boosting the output current of TENGs, promoting its practical applications. Graphical Abstract: ga1 Highlights: A new operation method of decoupled charge pump for TENG (DCP-TENG) is proposed to maximize the charge storage and transport. The DCP-TENG takes the pump and main TENGs of different modes and decouples their synchronous movements. The technologies of charge pump and discharge tube are applied to thousandfold boost the instantaneous peak current of triboelectric nanogenerator.